On-Load Tap Changer Type V Inspection Instructions PDF

On-Load Tap Changer Type V Inspection Instructions M R REINHAUSEN GERMANY  MASCHINENFABRIK...

On-Load Tap Changer Type V Inspection Instructions M R REINHAUSEN GERMANY  MASCHINENFABRIK REINHAUSEN © Maschinenfabrik Reinhausen GmbH 1997 Postfach 1 2 0 3 6 0 93025 Regensburg Germany Phone: (+49) 9 4 1 / 4 0 90-0 Fax: (+49) 9 4 1 / 4 0 90-111 Internet: http://www.reinhausen.com E-Mail: [email protected] ON-LOAD TAP CHANGER TYPE V Inspection Instructions No. 113/01 Contents Page GIBNETAL.......eceeceiiiiieiecreeeriereeereeesesnressssnesesseesssseesassenssssnesesnesessnnesssssean 3 1.1 Function principle of the tap changer 1.2 Designation of the tap changer 1.3 Components of the tap changer 14 Inspection intervals 15 Summary of inspection work Preparations...........cccocceiirerecerricrcssneerisresnsessesssncesssesscessssessssaessesneanas 7 21 Auxiliary tools and equipment 2.2 Safety measures 23 Operating position Removal of the tap changer insert.........ccccciiinneiriniinimsioniee. 8 3.1 Draining the tap changer oil 3.2 Uncoupling of the horizontal drive shaft 3.3 Removal of the tap changer cover 34 Removal of the gear unit 3.5 Removal of the suction tube 3.6 Disconnection of the change-over selector and removal of the tap changer insert Cleaning Procedures..........cccccverrecrrrrrererrrreneeseeeesne reneesraeesnnessareeses 11 4.1 Cleaning the oil compartment 4.2 Cleaning the suction tube 4.3 Cleaning the tap changer insert Please note: 4.3.1 Cleaning the tap changer insert externally 4.3.2 Cleaning the tap changer insert internally Drawings and illustrations 4.3.2.1 On-load tap changers V Ill 350 D, V | 350 and V | 700 contained herein may differ in 4.3.2.2 Neutral point tap changers V II1350 Y, V 111200 Y and V Ill 500 Y, detail from the tap changer tap changers type V delivered since 06/95 with clamped fixing of equipment delivered. the switching elements They are for reference only and 4.3.2.3 On-load tap changers V Ill 200 D and V | 200 -are subject to change without 4.3.2.4 On-load tap changer V Ill 500 D notice. 4.3.2.5 Inner screening rings with rivet fixing 4.3.2.6 Bottom bearing with steel tube 113/01/01/0 Contents Page 5. Additional inspection work on the tap changer insert............c.ccceueue.... 5.1 Measurement of the transition resistors 5.2 Determination of contact wear 5.3 Checking the spring movement of the contact rollers 54 Checking the proper seat of self-locking screws at the contact roller bearing plates or bushings 6. Replacement of contact rollers of main switching contacts and transition CONMACES assessreesssessasanes.......ccccecveienrerirerrrrirererrstreeeeseesie 6.1 On-loadtap changers V ill 350 D, V lll 350 Y (lower switching element), V 1380 a n d Vi700 Special features of the double switching element for on-load tap changer V Ill 350 Y 6.2 On-load tap changers V Ill 200 D, V ill 200 Y and V | 200 6.3 On-loadtap changers V {Il 500 D and V lll 500 Y 7. Installation of the tap changer insert............cccvveevveererecrecneeneenseessenns 7.1 Installing the tap changer insert 7.2 Setting the adjustment position 7.3 Installing of the centering tube 7.4 Installing of the gearing 8. OM N G ceveeeereererceeirrirerrseeiren irr eenrssnesssesessessssesssesssessssersssssararasaes 9. FURNEI CHECKS.......cecurrreeeererneerrenseresssasseserssssserssssssssasssssassessssssssaeas 9.1 Drive shafts 9.2 Function test of motor drive and tap changer 9.3 Protective relay RS 2001 9.4 Oil filter unit 9.5 Voltage regulator 10. APPENAIX......eeerireccirnrreerrererenersresseressessresssessssesssesssessssessesssassasarasas 10.1 Coupling of tap changer and motor drive 10.2 Inspection tools 10.3 Lifting device 10.4 Spare parts list 10.5 Tap changer parts 10.6 Adjustment plans 10.7 Removal and reinstallation of tap changer inserts for tap changer type V lit 500 D~76 delivered between 05/89 and 05/95 113/01/01/0 1. GENERAL bridged by ohmic resistors, so that the switching operation can be performed under load without interruption. 1.1 Function principle of the tap The tap changer type V is designed changer (fig. 1) as a selector switch combining the The function of the tap changer is to functions of a diverter switch and a set the desired tap of a regulating tap selector in one unit. If necessary, winding under load conditions. the tap changer is also equipped with a change-over selector. The switching When switching from one current- action of the change-over selector is carrying tap to the next, one step of performed before that of the selector the regulating winding is temporarily switch. Motor drive unit oB® On-load tap changer Switching element Time i n seconds Circuit diagram A,B - main contacts a , b -— switching contacts a l , bl - transition contacts Contact movement Fig. 1 Tap change operational sequence KHW 522-1 113/01/01/0 1.2 Tap changer designation (fig. 2) On-load tap changer Every tap changer is availabe in three Vv mm 350 D- 7 - 10191 W or single phase design. The different design vary in their max. rated through-currents in star-point design or with full insulation between the poles according to U,, and in their basic connections. Type Basic connection diagram The designation of a specific tap Number of poles —— changer design, therefore, incorporates Highest voltage all these characteristics and permits Max. rated for equipment through-current Um i n kV easy and distinctive identification of inA the tap changer. The basic circuit diagram code in the model designation identifies: Star-connection Y — the number of tap selector contacts, the number of operating positions, the Any c o n n e c t i o n D_ _ _ | number of mid-positions, and the type of change-over selector. Example of fig. 2 Basic connection diagram On-load tap changer type V: three-pole design, max. through- 10 19 1 w current 350 A, for any type of connection, insulation (to ground or between phases) for Up, = 76 kV, basic connection diagram 1 0 1 9 1W, Pitch of tap selector Mid-position(s) Change-over i.e. 10 contacts, 19 operating positions contact circle selector with one mid-position, change-over selector designed as reversing switch. 0 1 10 Max. number 3 G w 12 of operating posiitions Coarse tap Reversing 1.3 Components of the tap changer 14 selector switch (fig. 3) The main components of the on-load tap changer are: Without With Fig. 2 change-over selector - the tap changer head, Designation of tap | | - the oil compartment changer type and - the tap changer insert basic connection hd J All tap changer parts requiring inspec- diagram 14 27 tion are clearly marked in colour in fig. 3. 113/01/01/0  Fig.3 Components of the tap changer 11 Tap changer head Tap changer cover 13 Upper gear unit 14 Bleeder valve Inspection glass for position indication 21 Oil compartment cylinder 22 Oil compartment bottom 23 Change-over selector terminal 24 Selector switch terminal Take-off contact 26 Kerosene drain plug 31 Gear base plate Cog-wheel with coupling EY Geneva wheel for selector switch shaft Drive crank for change-over selector 41 Selector switch shaft Switching element 43 Contact roller for main switching contact and transition contact Stationary selector switch contact Contact roller for main switching contact 46 Contact roller for take-off terminal 47 Current ring for take-off terminal 48 Transition resistor 49 Bottom bearing 51 Change-over selector contact carrier 52 Screening ring 53 Movable change-over contact 61a Pipe connection R for protective relay 61b Pipe connection S with bleeder screw for suction pipe 61c Pipe connection Q for oil return flow (only with oil filter unit) 61d Bleeder screw for the transformer oil tank 62 Suction pipe 63 Suction tube 64 Centering 113/01/01/0 1.4 Inspection intervals The numbers of tap change operations If, under such circumstances, the highest which determine the inspection intervals operating voltage between the phases of IMPORTANT: The tap changing indicated in table l l are figures based on the tap changer is > 55 kV, the use of an equipment must b e inspected at experience using typical oil qualities. MR oil filter unit with combined filter is regular intervals to maintain a high always required (see Operating Instruc- level of operating reliability. Tap changer insert and gearing have to be replaced after 800,000 switching tions No. 18). The inspection can be carried out by operations. Filtering of the switching oil allows the qualified and MR-trained personnel inspection intervals to be extended. If the number of operations per year usually within one day, provided it has exceeds 15,000, we recommend the use The insulating oils in the transformer are been well prepared and organized. of our stationary oil filter unit type 51 with to be monitored by the operator according We strongly recommend that inspections a paper filter insert (see Operating to the appropriate directions. be carried out by our Technical Service. Instructions No. 18). If inspections are not carried out by MR This guarantees the professional When the tap changer V Ill 200 D, personnel, we request a report to supple- performance of the inspection and V I I I 350 D and V Ill 500 D is in operation ment our inspection data. ensures the updating of specific in countries with a tropical or subtropical components to the latest operational climate where the relative humidity is state. extremely high and the temperature in the oil conservator usually falls below the dew We recommend that you ask for an offer point every day, the use of an oil filter unit A WARNING: fot the necessary spare parts in prepa- ration of an inspection which shall not be with a combined filter insert is recom- Disregard of the inspection carried out by MR personnel (please mended to maintain the dielectric proper- intervals puts at risk the indicate the tap changer serial number ties of the switching oil. trouble-free operation of the and the number of tap change opera- tions performed). The following standard values for oil testing according to CIGRE report 12-13 (1982) apply to transformer oil at service temperature: On-load tap changer Water content”) Dielectric strength**) VIIi200Y, V I N 3 5 0 Y , VIIS00Y < 40 ppm > 30 kV/2.5 mm V I l 2 0 0 D , V I N 3 5 0 D , VIil500D < 30 ppm > 40 kv/2.5 mm V1200, VI350, VI700 < 30 ppm > 40 k V / 2. 5mm *) measured according to Karl-Fischer method based on IEC-Publication 814 **} measured according to DIN VDE 0370 Teil 1 Table | Guide values for monitoring the tap changer oil On-load tap changer Transformer Number of tap changers operations rated current without MR oil filter unit with MR oil filter unit V i i 2 0 0 Y , V I I 200D, VI200 u p t o 100A 100 000 150 000 V I i 2 5 0 Y , V I I 2 5 0D u p t o 2 5 0A 70 000 140 000 V I I I 3 5 0 Y , VII3S0D, V I 3 5 0 u p t o 200A 100 000 150 000 VIII400Y, V i l 400D u p t o 400A 70 000 140 000 VII500Y, VII500D u p t o 350A 100 000 150 000 u p t o 500 A 7 0 000 140 000 V1700 u p t o 350A 100 000 150 000 u p t o 700 A 7 0 000 140 000 Table l l Inspection intervals If the number of operations indicated in table I l has not been reached an inspection is to b e carried out after the following number of years: On-load tap changer type: VIi200Y, V I I 3 5 0 Y , V I I 5 0 0 Y First inspection: 6 - 7 years Further inspections: 6 - 7 years with or without MR oil filter unit On-load tap changer type: V HI 200 D, V I l l 250 D, V 111350 D, V I l l 400 D, V Hl 500 D, V 1200, V 1350, V 1 700 Arrangement of the on-load tap changer at the line end of the delta winding or i n autotransformers First inspection: 2 years Further inspections: 4 years without MR oil filterunit / 6 - 7 years with MR oil filter unit Arrangement of the on-load tap changer in the middie of the delta winding First inspection: 2 years Further inspections: 6 - 7 years with or without MR oil filter unit 6 113/01/01/0 1.5 Summary of inspection work 2. PREPARATION The inspection includes the following VI 200Y 1200/1350 mm 2.1 Required tools and equipment: vill 200D 1450/1650 mm work: To perform the inspection the Vil 350Y 1250/1400 mm — Removal and reinstallation of the following auxilliary equipment is Vil 350D 1600/1800 mm tap changer insert required: — Cleaning of the tap changer oil Vili 500Y 1750/1900 mm compartment and the tap changer — empty vessels for the used oil and Vill 500D 2000/2200 mm insert. The oil conservator should new transformer oil for cleaning V i 200 800/950 m m also be cleaned during a tap and oil change V i 350 800/950 m m changer inspection. V i 700 1050/1200 m m — Change of the switching oil V i l l 200Y 100/125 litres — Check of the tap changer oil V i l l 200D 145/165 litres Table I l l compartment and the tap changer V i l l 350Y 105/130 litres Lifting height in mm (with operating insert. v i l l 350D 165/180 litres key attached), without/with change- — Determination of the contact wear V i l l 500Y 160/185 litres over selector Up, = 76 kV. — Measurement of the transition V i l 500D 200/225 litres Note: resistors 60/85 litres The lifting height of tap changer models V l i l V i 200 — Check of the protective relay, the 200 D, V 11350 D and V lll 500 D, U p ,= 40 kV, V i 350 60/85 litres is shorter by 120 mm. drive shaft, the motor drive unit and, if present, the oil filter unit and V i 700 85/108 litres the voltage regulator. - inspection tools The tap changer insert and the Table l l (see section 10.2) interior of the oil compartment should Oil filling quantity in litres (approx.) be exposed to air humidity no longer without/with change-over selector — spare parts than 10 hours at most. (see section 10.4) The inspection work should not be an oil pump for the oil change Please note: interrupted. Care and cleanliness brushes and absorbent, non- Lock tabs, self-locking nuts and should be observed. fuzzing rags screws should never be used twice; after removal they must be replaced — brushes for cleaning the suction by new ones. tube, the switching tube and the oil compartment cylinder (see section AN WARNING: 10.2) The inspection must b e carried — a work table out b y qualified, skilled person- nel only. All instructions given ~ alifting device: i n the Inspection Instructions either a crane or an MR lifting /N\ CAUTION: manual must b e strictly obser- device (see section 10.3); ved. weight of tap changer insert: max. Always use MR-authorized If any damage i s detected during 80 kg replacement parts. inspection, immediately contact Parts of other origin can affect MR for assistance. I n this case the trouble-free operation of the tap changer must not b e put tap changer and transformer. into service. D o not alter o r modify the tap changer equipment without prior consultation with MR. Improperly performed o r incom- plete inspection work can affect the trouble-free operation of tap changer a n d transformer. Under certain circumstances this can cause property damage and/or personal injury. 113/01/01/0 “2.2 Safety precautions 3. REMOVAL OF THE TAP JAN WARNING: A CAUTION: D o not operate the motor drive 3.1 CHANGER INSERT (fig. 5) Draining the tap changer oil Ensure that the following safety while the tap changer i s uncoupled. Close the stop valve between ail T o prevent electrical operation trip precautions have been carried conservator and tap changer head. the motor protective switch t o block out b y the user of the plant: the motor drive. Open the drain valve of the tap The transformer must b e changer and the bleeder valve (see disconnected and secured fig. 6) on the tap changer cover - against reclosing. All terminals (remove the screw cap M30 / w.s. 36, must be grounded visibly lift the valve tappet with the help of a (ground cables and ground screwdriver). Drain the oil from the oil switches). compartment. The working area must b e clearly marked out. Inspection must not begin before these safety measures have been carried out. Ignoring this warning endangers lives. 2.3 Operating position The tap changer insert must be in the adjustment position for withdrawal. Take note of the current operating position. The operating position is marked by a Fig. 5 red arrow on the indication dial of the 1 — Guard plate for horizontal drive motor drive (fig. 4). The adjustment shaft position is reached by turning the 2 — Gear unit hand crank clockwise. 3 — Tap changer cover 4 — Inspection glass cover 5 — Bleeder valve 6 — Pipe connection for protective relay RS 2001 7 - Pipe connection for suction pipe 113/01/01/0  JAN ATTENTION: The switching oil of the tap changer must be handled as a flammable liquid. Explosive gases can accumulate under the tap changer cover, i n the switching o i l o r i n the o i l compartment. : Strictly avoid open fire. Use only pumping equipment suitable for flammable liquids. If an oil filter unit is installed: Close the stop valve of the return pipe, open the sample valve and put Loosen the suction pipe connection the oil filter unit into service. Drain the oil from the oil compartment via the oil and the spring energy accumulator: return pipe. * Loosen the screw connection at the suction pipe R 3/4" (w.s. 27, w.s. 39), do not damage the gasket. + withdraw the fixing bolt for the 3.2 Uncoupling the horizontal spring energy accumulator from drive shaft the tap changer head by using a screw M5 x 20. Loosen the hose clamp at the guard plate for the horizontal drive shaft. Removal of the gearing: Remove the guard plate. * Loosen 5 screws M8 x 20/w.s. 3 Unlock and loosen the 6 screws M6/ (fig. 9). Do not lose the spring w.s. 10 on the coupling piece to the washers. upper gear unit (fig. 7). Take care not * Remove the gearing by lifting it out to lose coupling bolts, nuts or lock (fig. 10). tabs. * Take note of the position of the support bars and of the markings Normally the drive shaft can be for later reinstallation (fig.11). moved to one side for clearance. If not, remove the other coupling of Store all removed parts for later the bevel gear from the square tube reassembly. (screws, nuts and lock tabs as above), so that the horizontal drive shaft can be completely removed. AN ATTENTION: Do not drop any parts into the o i l compartment as the tap 3.3 Removal of the tap changer changer can block and cause cover severe damage t o the tap changer and transformer. * Unscrew 2 0 bolts M 1 0 x 35/w.s.17, Ensure that the number of make sure not to lose the spring small parts i s complete when washers disassembling and reinstalling. * Remove the tap changer cover. Count them t o b e sure. Take care not to damage the gasket. 3.4.1 Replacement of the energy 3.4 Removal of the gear unit accumulator spring system The gear plate is fixed to the tap As a precaution, the energy accu- changer cover by 5 screws M8 (fig. 8). mulator spring system should be Take note of the gear markings for replaced after 300,000 switching later reinstallation. operations (fig. 10). 113/01/01/0 3.5 Removal of the suction pipe The suction pipe centers on the lower end the tap changer insert in the bottom bearing. When withdrawing the suction pipe, a certain contact pressure has to be overcome. Lift the suction pipe slightly with the help of the lifting device that can be lifted into the upper slot (fig. 12). Then grasp the second slot and remove the suction pipe completely by hand (fig. 13). 3.6 Bringing the change-over selector into withdrawal position and removing the tap changer insert When removing the tap changer insert use the lifting device described in section 10.2, drawing 898 191. It must be fixed to the coupling of the tap changer insert by 3 bolts M10 x 20. Insert the carrier in the notch between the supporting rails (fig. 14). Before removal of the tap changer insert, the change-over selector has to be brought into a suitable position for withdrawal. This position is reached by turning the operating key clockwise until the movable change- over contacts are in a position between the stationary contacts of different phases (fig. 15). IMPORTANT: Note the instructions for the use of the operating key i n section 10.2, dwg. 898 191. Hang the lifting device onto the operating key (fig. 16a) and lift out the tap changer insert slowly and carefully (fig. 17). Make sure that there is sufficient clearance between screening rings, parts of the switching elements of the tap changer insert and the stationary part of the oil compartment. Put the tap changer insert aside, secure it and let the oil drip off. 10 113/01/01/0 4. CLEANING AND CHECKS JAN ATTENTION: Use only new transformer oil when cleaning the o i l compart- ment, the suction pipe and the tap changer insert. Other liquids (e.g. organic solvents, cleaning petrol) are not suitable. The use of other cleaning agents can endanger the trouble-free operation of the tap changer and the transformer. Ensure that the cleaned sur- faces are free of carbon deposits. IMPORTANT: After cleaning check the surfaces of all insulating materials of the parts subjected t o voltage stress. Pay particular attention t o mechanical and electrical damage (discharge trackings) o n the following components: — interior of the o i l compartment (with the help of a mirror) — Inside and outside of the tap Fig. 17 changer insert (with the help of a mirror) 1 — Kerosene drain plug — suction pipe inside and outside 2 Selector switch contact - contact shells of the change- 3 Current take-off ring over selector 4 Change-over selector contact Replace all defective insulating parts as they can cause damage t o the tap changer and the transformer if operation i s continued. section 10.2). 4.1 Cleaning the oil compartment Always flush with new transformer oil. (fig. 17) Continue draining until the oil com- Open the stop valve between tap partment is completely empty. Close changer head and oil conservator. the tap changer head with the cover. Drain the oil from the oil conservator until only clean oil is flowing. If Check the silicagel breather for the necessary, flush the oil conservator of tap changer oil conservator. the tap changer with new transformer Replace it, if necessary. oil. Flush the inside of the oil compartment with transformer oil. 4.2 Cleaning the suction pipe Carbon deposits sticking to the inner Wipe the outer surface of the suction surface of the oil compartment can be pipe with a rag. Clean it inside with a removed with the help of a brush of brush of 40 mm diameter (fig. 19), 400 mm diameter (fig. 18, also see see section 10.2. Finally, flush with new transformer oil. 113/01/01/0 11 4.3 Cleaning the tap changer insert 4.3.2.1 Tap changer types V i l 350 D,V | 350 and The tap changer insert must be cleaned inside and outside. Cleaning V1700 the inside of the tap changer insertis Proceed as follows: done i n several steps. — Unlock and loosen the 4 fixing Please note: Clean the tap changer bolts at the bottom bearing: insert with great care. Thoroughly 3xM8x20,1xM8x25/w.s.13 check the inside and outside, visually. (fig. 20). Do not lose the 2 dished washers at the M8 x 25 bolt. 4.3.1 Cleaning the tap changer insert _ Remove the bottom bearing from externally the switching tube (fig. 21). When cleaning the outside of the tap — Number all switching elements in changer insert use a brush for the order of their removal. cleaning the switching elements, the transition resistors, the contact Continue with each single switching holders of the change-over selector ~~ @lement: and the switching tube. Finally flush — Unlock and unscrew the 6 fixing all parts with new transformer oil. bolts M5 x 8/ w.s. 8 of the upper screening ring (fig. 22) as follows: Unlock and loosen the 6 fixing 4.3.2 Cleaning the tap changer insert screws M5 x 8 / w.s. 10 of each internally os switching element as follows: To clean the interior of the tap 1 screw each in the center and on changer insert it is necessary to top (fig. 23) and bottom, remove the bottom bearing and the inner screening rings of the switching 1 Screw each, on the left and on the right, on top and bottom. tube. The removal of the inner screening Please note: When reinstalling rings requires the removal of all the switching element the M6 x 30 Switching elements bolts must be replaced by self- However, this procedure is not locking Tuflok bolts M6 x 30 required for tap changers type (MR part no. 401 809). V I E 3 5 0 Y , V I I I 2 0 0 Y and V 11 500 Y and with all tap changers type V with clamped fixing of the switching elements delivered later than 06/95 (see section 4.3.2.2). 453 +33913 sitBin REE 12 113/01/01/0 — Disassemble all switching elements (fig. 25). MN ATTENTION! D o not damage the surface of the switching tube when disassemb- ling the switching elements. Any damage t o the switching tube can reduce the insulating properties. Please note: The through-holes in the switching tube for the fixing of the switching elements are pro- vided with grooves where a washer is placed. Remove these washers (fig. 26). Proceed with each inner screening ring as follows: — Remove the 3 hexagon socket- head screws M6 x 10/ w.s. 4 with dished washers (fig. 27). The screws are self-locking and must be replaced by new ones during reassembly. Remove all inner screening rings (fig. 28, 29). Note the order of removal. 11301/01/0 13  Please note: AN ATTENTION! Fixing one switching element: with 6 screws M6 x 30 / w.s. 10 Do not damage the inside of the (self-locking), max. torque 9 Nm, switching tube when removing secured by lock tabs. the inner screening rings. Any damage t o the switching Fixing one screening ring: tube can reduce the insulating properties. with 6 screws M5 x 8 / w.s. 8, with lock tabs, max. torque 5 Nm Clean the inside of the switching tube Fixing the bottom bearing: a s follows: with 4 screws M8 /w.s. 13 — Place the switching tube (with the (3 x M8 x 20, 1 x M8 x 25), with change-over selector at the lower lock tabs, max. torque 15 Nm. end) in a plastic vessel. Please observe the following order — Flush the inside of the switching from inside to outside when tube thoroughly with transformer installing the potential plate: oil. 2 dished washers, potential plate, -~ Carbon deposits sticking to the lock tabs, screw M 8 x 25. surface can be removedusing a brush of 140 mm diameter (fig. 30), see section 10.2, — Flush again with transformer oil — Make a thorough visual check. Reinstallation of the inner screening rings: — Fix the inner screening rings provisionally to the switching tube by 6 screws M6 x 30 (on top and bottom). — Attach each of the inner screening rings with 3 hexagon socket-head screws M6 x 10 / w.s. 4 (self- locking) and 1 dished washer, max. torque 9 Nm (fig. 31). — Further assembly of the tap changer insert is done in the reverse order to the disassembly of the switching elements and the bottom bearing (fig. 32, 33). 14 113/01/01/0 4.3.2.2 Neutral-point tap changers VII350Y (fig. 34), V I I I 2 0 0 Y and V I I I 500 Y Tap changers type V delivered since 06/95 with clamped fixing of the switch- ing elements (example V 11200 D, see fig. 35a,35b). Before cleaning the switching tube internally remove the bottom bearing: in case of tap changer types V 111 350 Y or V 350 (since 06/95) according to section 4.3.2.1, in case of tap changer types V 111200 Y or V 200 (since 06/95) according to section 4.3.2.3, in case of tap changer types V i l l 500 Y or V 500 (since 06/95) according to section 4.3.2.4. 4.3.2.3 Tap changers type V Ill 200 D and V 1200 Proceed a s follows: — Unlock and unscrew the 4 fixing screws of the bottom bearing: 3xM8x20,1xM8x25/w.s.13 (fig. 36). Do not lose the 2 dished washers with screw M8 x 25. — Remove the bottom bearing from the switching tube (fig. 37). — Number all switching elements in the order of their removal. — Unlock and loosen the following screws at each switching element: 6 fixing screws M5 x 8/ w.s. 8 at both the upper and lower end of the screening ring (fig. 38). 113/01/01/0 15  — 6 fixing screws M6 x 30 / w.s.10 of the switching element as follows: 1 screw with lock tab in the middle, (fig. 39) and bottom, (fig. 40) do not lose the tensioning disk beneath the potential plate; 1 screw with lock tab on the top, left and right side, 1 screw with two tensioning disks (fig. 41) on the bottom, left and right side. Please note: The screws M6 x 30 must be re- placed by self-locking Tuflok screws M6 x 30 (MR part no. 401 809) when reinstalling the switching element. New types with steel bracket require 3 Tuflok screws M6 x 35 (MR part no. 401 023) at the bottom. + — Disassemble all switching elements (fig. 42). AN ATTENTION! Do not damage the surface of the switching tube when removing the switching elements. Any defect o n the switching tube can reduce the insulating properties. Further dissassembly of the inner screening rings (fig. 43, 44) and the cleaning of the switching tube inside must be performed as described in section 4.3.2.1. 16 113/01/01/0 Reassembly of the tap changer insert 4.3.2.4 On-load tap changer is carried out in the reverse order to type V III 500 D the disassembly of the inner screen- Proceed as follows: ing rings, the switching elements and the bottom bearing. — Unlock and loosen 3 fixing screws M8 x 20/SW13 (fig. 45). Please note: Fixing the inner screening rings: — Unscrew lock nut M6/w.s.10 at the each with 3 self-locking socket potential plate (fig. 46), unlock screws M6 x 10 / w.s. 4 with dished and loosen special screw M8 x 18/ washers, max. torque 9 Nm. w.s.13 (with thread M6 x 8). Fixing the switching elements: — Remove the bottom bearing each with 6 self-locking screws M6 x 30/ (fig. 47). w.s. 10, max. torque 9 Nm. 3 of these — Number the switching elements in screws are located on top (in the the order of their removal. middle, on the left and right side), secured by lock tabs. The other 3 — Loosen screw M6 x 30 at the con- screws are at the bottom (in the necting plate (betweeen switching middle, on the left and right side), element and main switching con- each provided with 2 tensioning tact bearing support) (fig. 48). disks. Do not lose the 2 tensioning disks beneath the screw head which will For designs with steel bracket use 3 be needed for reinstallation. self-locking Tuflock screws M6 x 35 at the bottom. Fixing the screening rings: each with 6 screws M5 x 8 /w.s. 8, max. torque 5 Nm, secured by lock tabs. Fixing the bottom bearing 4 screws M8/w.s.13 (3 x M8 x 20, 1 x M8 x 25), secured by lock tabs. When mounting the potential plate observe the following order of assembly: 2 tensioning disks, poten- tial plate, lock tab, screw M8 x 25. Bild alia 113/01/01/0 17 — Unlock and loosen the screw connection at the main switching contact bearing support (4 screws M6 x 30, fig. 49, 50). Do not lose the tensioning disks beneath the lock tabs. ~ Remove the main switching contact bearing support. — Unlock and unscrew the 6 screws M5 x 8/w.s. 8 at the upper screen- ing ring of the lower switching element (fig. 51). — Unlock and unscrew the 5 screws M6 x 30/ w.s. 10 at the switching element a s follows: 1 screw in the upper middie (fig. 52, one screw on the outer left and right (on top, fig. 53). 1 self-locking screw on the bottom, left and right side (do not lose the tensioning disks). Please note: The screws of size M6 x 30 must be replaced by self-locking Tuflock screws M6 x 30 (MR part no. 401 809) during reassembly. New designs without steel bracket require 3 Tuflock screws M6 x 35 (MR part no. 401 023) at the lower end. — Remove the switching element (fig. 54). MN ATTENTION! D o not damage the surface of the switching tube when removing the switching elements. Any damage t o the switching tube can reduce the insulating properties. — Dismount the screening ring of the next switching element: unlock and loosen 3 screws M8 x 30 (fig. 55), remove the screening ring, take the 3 spacing sleeves from the switching tube (fig. 56). 18 — remove all other main contact Fixing the screening rings o n the 4.3.2.5 Inner screening rings with bearing supports, screening rings bottom: rivet fixing and switching elements each with 3 screws M8 x 30 / w.s.13, The inner screening rings of all tap max. torque 15 Nm, spacer sleeves, Remove the inner screening rings changers type V delivered until 12/90 secured by lock tabs. (fig. 57, 58, 59) and clean the switch- are fixed to the switching tube by ing tube internally as described in Fixing the main switching contact rivets. This type of fixing is visible section 4.3.2.1. bearing supports: when removing the switchingelements each with 4 screws M6 x 30/w.s.10, (see section 4.3.2.1, 4.3.2.3 and Reassembly of the tap changer insert max. torque 9 Nm, secured by iock 4.3.2.4). It must be changed to is performed in the reverse order to tabs, tensioning disks. screwed fixing. the removal of the inner screening rings, the switching elements, the For this procedure you need: screening rings, the main contact Twist drills of 4.2 mm and 5.5 mm bearing supports and the bottom diameter, a tap drill M5 and for each bearing. switching element: Please observe: 3 hex. head screws M5 x 18 (self- Fixing the inner screening rings: locking), MR part no. 401 045, and each with 3 self-locking hexagon 3 washers (inner diameter 5 mm), MR part no. 073 284. socket-head screws M6 x 10/w.s. 4 and dished washers, max. torque Proceed a s follows: 9 Nm. — Dismount the bottom bearing and Fixing the switching elements the switching elements. each with 6 self-locking screws M6 x In case of tap changer types 30/w.s. 10. Three of these screws are V I I 350 D, V I 350 and V | 700, located on top (in the middle, on the refer to section 4.3.2.1, left and right side), secured by lock tabs. The 3 other screws are at the in case of tap changer types bottom (in the middle, on the left and V 111 200 D and V | 200 refer to right side) each provided with 2 section 4.3.2.3, tensioning disks. in case of tap changer type For designs without steel brackets V Ill 500 D refer to section 4.3.2.4. use 3 self-locking tuflock screws MS x 35 at the bottom. Fixing the screening rings o n top each with 6 screws M5 x 8/w.s. 8, max. torque 5 Nm, secured by lock tabs. 11301010 19 — Attach the inner screening rings provisionally with 6 screws M6 x 30. Drill out the rivets by using a drill of 4.2 mm diameter (fig. 60) and remove any rivet bits completely. — Remove the inner screening rings (fig. 61, 62). Make sure not to damage the inner surface of the switching tube. — Enlarge the through-holes for the rivets with a drill of 5.5 mm diameter (fig. 63). — Drill a tapped hole M5 for each screening ring support (fig. 64). — Clean the switching tube inside as described in section 4.3.2.1. 20 113/01/01/0 — Insert the inner screening rings into the switching tube and provisionally attach them with 6 screws M6 x 30 (fig. 65). — Fix the inner screening rings with 3 self-locking screws M5 x 16 (MR part no. 401 045) and lock tabs (fig. 66). — Place the washers in the grooves of the switching tube and push the switching element onto the switching tube. The roller contacts should be displaced by approx. 180° relative to the fixing holes (fig. 67). — Turn the switching element by 180° and secure it (fig. 68). — For further reassembiy of the tap changer insert follow the instructions given in sections 432.1,43.230r4.324. 4.3.2.6 Bottom bearing with steel tube The following spare parts are needed (fig. 69) when reinstalling the steel tube: This design was used for tap changer On-load tap changer type V 350 types V 111350 D, V Ili 200 D and 2 lock tabs, MR part no. 056 373, V 11 500 D delivered from 01/84 until 3 lock tabs, MR part no. 032 414 12/86, and for all other type V designs up to 12/88. On-load tap changers type V 200 a n d V 500 Before removing the bottom bearing 2 lock tabs, MR part no. 045 322, the lower switching element must be 6 Tuflock screws M 6 x 16, removed. MR part no. 401 832 113/01/01/0 21 Proceed a s follows: (e.g. tap changer V Il] 350 D): — Remove the upper screening ring: unlock and loosen the 6 fixing screws M5 x 8 / w.s. 8 (fig. 70). —~ unlock and unscrew the 6 fixing screws M6 x 30 / w.s.10 at the lower switching element (fig. 71 and 72). — Withdraw the switching element from the switching column (fig. 73) — Remove the 3 spacing sleeves from the bottom bearing (fig. 74). — Unlock and unscrew the 3 screws M 6 x 20/w.s.10 (fig. 75). — Remove the spacing sleeves (fig. 76). — Unlock and loosen further 6 screws M6 x 20/w.s. 10 (fig. 77), remove the spacer sleeves — Withdraw the steel tube together with the bottom bearing from the switching tube (fig. 78). 22 — Please refer to sections 4.3.2.1 to 5. FURTHER INSPECTION 4.3.2.4 for the further disassembly WORK ON THE TAP of the switching elements, the CHANGER INSERT cleaning of the switching tube and reinstallation of the upper switching elements. 5.1 Measurement of the transition resistors — Reinstall the bottom bearing in reverse order to its removal. Measure the transition resistors when Fix the steel tube with the bottom connected, i.e. between switching con- bearing with: tact rollers and transition contact rol- 3 and 6 screws M6 x 20 with lers of each switching element. spacer sleeves and lock tabs, The values should b e between 0.5 max. torque 9 Nm. and 20 ohms. — Mount the lower switching The middle one of the three contact element. rollers is always the movable switch- ing contact. The measured resistance values should be the same and should comply with the values stated on the rating plate (see tap changer cover). A 1 10 percent deviation is per- missible. 5.2 Determination of the contact wear The contact wear at the contact rollers is measured with a slide gauge (see fig. 80) and by comparing the measured contact diameter with a new diameter (see table IV). The contacts need to be replaced when the minimum contact roller diameter has been reached or is expected to be reached before the next inspection. If replacement is necessary, always replace the complete set of contact rollers of the tap changer. - 8.3 Checking the spring movement of the contact rollers. Check the smooth spring operation of the contact rollers for the switching contacts and the transition contacts (fig. 81). Also check the contact rollers for the take-off contact and the main contact (fig. 82) of each switching element. 113/01/01/0 23  Contact Number of MR part Contact diameter On-load tap changer contacts in the number in mm contact circle when new minimum V 350 complete 10.12 085 495 22.0 17.0 switching contact 14 086 063 22.0 17.0 complete 10.12 085 495 22.0 17.0 transition contact on the left 086 064 20,0 17,0 14 on the right 086 065 20.0 17.0 Vv 200 complete 10.12 086 948 22.0 16.0 switching contact 14 087 252 22.0 16.0 complete on the left transition 087 093 22.0 16.0 contact 10,12 on the right 087 094 16.0 on the left 087 013 20.0 16.0 14 on the right 087 014 20.0 16.0 V 500 complete switching 10.12 087 529 220 17.0 contact complete on the left transition 897 490 22.0 17.0 contact 10.12 on the right 087 491 22.0 17.0 Table IV Diameter values of contact rollers when new and when contact replacement is required 24 113/01/010 56.4 Check secure fit of the self- locking hexagon socket-head screws M6/w.s. 4 at the contact roller bearing plates or contact roller bearing bushings with torque 8 Nm: With tap changer types V I I 3 5 0 D and V H I 3 5 0 Y (lower switching element), V 1350 and V | 700 check of one screw as shown in fig. 83. With tap changer type V l i 350 Y (double switching element) check of 1 screw each at the bearing plates located opposite each other (fig. 84). Removal and reinstallation of the take-off and main contact rollers is to be carried out according to section 6.1. With tap changer types V I i 200 D, V 111 200 Y and V 1200 check of 3 screws of the bearing bushings on the top (fig. 85) and bottom (fig. 86). Remove and reinstall the upper hood as described in section 6.2. With tap changers B e i V I I 5 0 0 D and VIII 500 Y check of 3 screws at each of the upper (fig. 87) and lower (fig. 88) bearing bushings. Remove and reinstall the upper hood a s described i n section 6.3. 113/01/010 25 6. REPLACEMENT OF CONTACT ROLLERS FOR MAIN SWITCHING CONTACTS AND TRANSITION CONTACTS 6.1 On-loadtap changer types V I I 3 5 0 D , VIII 350 Y (lower switching element), V 1 350 and V 1 700 (for respective switching element see fig. Bild 89) Proceed a s follows with each switching element: — Loosen the resistor connecting lead by unscrewing 2 hexagon socket-head screws M4 x 10/w.s. 2.5 each on both the left and right side (fig. 90). Pull the braided lead out of the clamping piece. The screws are self-locking and must be replaced during reassem- bly. —~ Loosen the braided lead connection at the switching contact (fig. 91): Lock nut M5/w.s. 8 and washer; replace the nut when reassem- bling. — Unlock and loosen screw M6 x 105/w.s.10 at the upper bearing plate (fig. 92). — Pull out main contact bolts downwards (fig. 93). — Remove the main contact lever (fig. 94), do not lose the 2 springs. — Withdraw the 2 pressure springs (bottom — 11.5, upper top side £i10.5, fig. 95). The springs are to be replaced by new ones. 26 113/01/01/0 — Separate all cable shoes from the braided leads (fig. 96). — Unlock and loosen the fixing screws for the lower bearing plate: 3 screws M6 x 20/w.s. 10 (fig. 97), 1 screw M6 x 105, 1 self-locking "hexagon socket-head screw M6 x 16/w.s.4 with spring washer (fig. 98). — Remove the lower bearing plate (fig. 99). — Remove the 2 arc chutes (fig. 100). — Withdraw the small insulating tubes from the braided contact leads (fig. 101). — Pull the insulating hoses off the braided contact leads; pull out the braided contact leads upwardly (fig. 102). 113/01/01/0 27 — Remove the contact rollers (fig. 103, 104). Take care of the springs and spring tops. : 060858 — 200278 (10/12 ; - 200353 (14) AW 3 061936 (14) 060897 | N 400372 l i : 1 7° 'as0332 060856 (10/12) 061937 (14) 401809 \ a - = j 11 420713 453981 450352 ; ( 061938 (14) 060861 (10/12) = < 1 061889 (14)— SC 10 e 450335 (14) | 450335 085495 (10/12) \ 086064 (L/14) 550105 | 086063 (M/14) 060856 (10/12) i ! 086065 (R/14) 451425 (10/12) 3 061837 (14) | | 420713 Nas3981 043071oo—L__| sores 1 45138 6 (10/12) | 043071 (14) \ — 200277 (10/12) — 200352 (14) (401809 KHW 885-1 + 886-1 MASCHINEN FABRIK On-load t a p changer type V. M REINHAUSEN Parts of single switching element V 350 894 369:1E EEE EE 113/01/01/0 51  Part-Nr. Designation 022 375 Lock tab? 025 631 Lock tab 043 071 Lock tab? 044 189 Washer 060 833 Bearing support 060 856 Insulating cylinder" 060 857 Main contact axle 060 858 Lock tab 060 861 Case" 060 897 Supporting tube 061 889 Case? 061 937 Insulating cylinder? 062 172 Supporting tube 062 228 Supporting plate on the top? 062 259 Supporting plate on the top? 062 328 Lock tab 084 813 Main contact axle 085 495 Switching contact! and transition contact” 085 535 Complete connecting lead 085 553 Complete main contact 086 063 Switching contact? 086 064 Transition contact?, left 086 065 Transition contact?, right 200 277 Supporting plate, bottom" 200 278 Supporting plate, the top" 200 284 Spring top 200 352 Supporting plate, bottom? 200 353 Supporting plate, top? 400 266 Hexagon head screw M6 x 105 400 372 Washer 401 795 Cylindrical screw M6 x 16", self-locking(Tuflok) 401 809 Hexagon head screw M6 x 30, self-locking (Tuflok) 450 330 Hexagon head screw M5 x 8 450 335 Hexagon head screw M5 x 20? 450 352 Hexagon head screw M6 x 12 450 356 Hexagon head screw M6 x 1 8 " 450 500 Hexagon head screw M6 x 22 451 238 Hexagon nut M6 451 346 Washer 451 386 Spring washer" 451 425 Lock tab? 453 255 Hexagon head screw M5 x 16 453 981 Lock nut M5 500 145 Arc chute 500 147 Pressure spring 5650 105 Pressure spring 550 564 Pressure spring Anmerkung: " 10-pitch and 12-pitch design 2 14-pitch design M M S CHINENFABRIK On-lod tap changer type V Part designation for Parts of double switching element V 350 894 370:1E 1] 52 113/01/01/0  400266 450356 (10/12) 450500 (14) 060858 (10/12) 450500 043071 (14) 060858 02 200278 (10/1 200353 (14) 060856 (10/12) 061937 ( 1 4 ) — 060897 4003727Ax 401809 062328 450 352 080861 (10/12) L—oe1889 (14) 400372 F || orf 085495 (10/12)— 062328 086064 (L/14)—] 500 145 | {450352 | 066063 (M/14)— 060856 (10/12) — : 086065 (R/14)— —— 061937 (14) 451425 (1012) | 060897 i 200277 (10/12) 043071 (14) 200352 (14) 451386 (10/12) 043071 (14) \ 450500 401795 (10/12) 450500 (14) 08481 450352 062328 401809 085495 (10/12) | 086065 (14) — | 062228 (10/12) 062259 (14) 085495 (10/12)— 085063 (14)—— 085495 (10/12)— 062172 086064 (14) — | 451238 KHW 883-1 + 884-1 MASCHINENFABRIK On-load tap changer type V M REINHAUSEN 894 370:1E Parts of double switching element V 350 113/01/01/0 53  Part-Nr. Designation 051 331 Washer 060 191 Hex. nut M22 x 1.5 060 820 Current collecting ring 060 854 Selector switch contact? 060 862 Selector switch terminal contact 060 883 Lock tab 060 891 Screening 060 893 Screening 060 894 Selector switch contact? 061 204 Screening electrode 061 500 Contact screening 061 935 Selector switch contact? 062 511 Washer 064 601 Contact bolt 066 441 Current collecting ring holder 067 120 Tension bolt 068 257 Stationary change-over selector contact (+, -) 069 289 Current collecting ring connection 071 663 Change-over selector contact bridge (0) 074 226 Contact screening 200 279 Contact shell? 200 289 Spacer 200 295 Contact shell" 200 350 Contact shell® 400 288 Dished washer 400 437 O-ring 400 502 O-ring 400 598 O-ring 401 049 Slotted socket screw M6 x 14, self-locking 451 239 Hex. nut M8 451 792 Dished washer 453 230 Notched pin 453 978 Lock nut M8 550 321 Dished washer 860 099 O-ring Remark : " 10-pitch design 2 10-pitch design 3 14-pitch design M MASCHINENIABRIK On-load tap changer type V Part designation for Parts of contact cylinder V 350 894 371:1E I CE 54 113/01/01/0  401049 060 854(10) 060894(12) 081935(14) K H W 504-1 + 8 9 1 - 1 MASCHINENFABRIK On-load tap changer type V M REINHAUSEN Parts of contact cylinder V 350 894 371:1E 1 | 113/01/01/0 55  Part-Nr. Designation 044 189 Washer 055 683 Washer 060 860 Lock tab 063 835 Screening cap 064 273 Lock tab 065 990 Contact housing" 066 032 Retaining clip 066 137 Pressure plate 067 294 Contact housing? 068 437 Lock tab 086 948 Complete switching contact" 087 013 Complete transition contact, left? © 087014 Complete transition contact, right? 087 093 Complete transition contact, left" 087 094 Complete transition contact, right" 087 252 Complete switching contact? 095 804 Complete screening ring, bottom 096 044 Complete screening ring, top 200 284 Spring top 200 401 Bearing sleeve 200 402 Lever 200 403 Contact stop 200 404 Bushing 400 040 Lock nut M3 400 372 Washer 400 440 Thread pin with hexagon socket screw M5 x 6 400 644 Slotted socked screw M6 x 12, self-locking(Tufiok) 401 023 Hex. head screw M6 x 35, self-locking (Tuflok) 401793 Hex. recess head screw M4 x 10, self-locking (Tuflok) 401 809 Hex. head screw M6 x 30, self-locking(Tuflok) 420713 Washer 450 330 Hex head screw M5 x 8 450 332 Hex. head screw M5 x 12 450 335 Hex. head screw M 5 x 2 0 450 337 Hex. head screw M 5 x 25 450 351 Hex. head screw M 6 x 1 0 450 352 Hex. head screw M6 x 12 450 358 Hex. head screw M6 x 20 450 777 Cylindrical head screw M3 x 16 451 655 Cylindrical pin 452 206 Circlip lock ring 453 977 Lock nut M6 453 981 Lock nut M5 550 105 Pressure spring for contact roller 550 159 Pressure spring for main contact lever 581 869 Cable socket with pin Remark : 1 0 - p i t c hand 12-pitch design 2 14-pitch design M NASER OHI On-load tap changer type V Part designat ion for Parts of the switching element V 200 894 367:1E EE EE 113/01/01/0 56  ~~ ~~ 096044 200401 ~~ A 2 “% 2 Z Z4 = P MAN 2 zz il ER \ \ Ey 087083 (10112) a 087013 (14) 086948 (10/12) 087252 (14) Sq | 450 330 KHW 889-1 + 890-1 M MASCHINENFABRIK On-load tap changer type V REINHAUSEN 894 367:1E Parts of the switching element V 200 113/01/01/0 57  Part-Nr. Designation 051 331 Washer 060 191 Hexagonal nut M22 x 1.5 060 820 Current collecting ring 060 891 Screening 061 204 Screening electrode 061 500 Contact screening 062 511 Washer 063 235 Screening 064 256 (063 558)" Selector switch contact? 064 257 (063 561)* Selector switch contact? 064 258 (063 451)" Selector switch contact? 066 441 Current collecting ring holder 067 120 Tension bolt 068 289 Stationary change-over selector contact (+, -) 069 289 Current collecting ring connection 071 663 Change-over selector (0) 074 226 Contact screening 200 289 Spacer 200 387 Contact shell? 200 388 Contact shell? 200 389 Contact shell® 400 288 Dished washer 400 351 Hex. nut M20 x 1.5 400 437 O-ring 451 792 Dished washer 452 352 Dished washer 453 230 Notched pin 453 978 Lock nut M8 890 099 O-ring Remark : " 10-pitch design 2 12-pitch design 3 14-pitch design 4 Alternatively turned for 90° MASCHINENFABRIK On-load tap changer type V Part designation for M REINHAUSEN Parts of the contact cylinder V 200 894 368:1E 58 113/01/01/0  200387 (10) 200388 (12) 200389 (14) © 0608 91 | 208 000209 \\ TR 453978 400437 KHW 469-1 + 892-1 M MASCHINENFABRIK MAS CHINEN On-load tap changer type V o 894 368:1E Parts of the contact cylinder V 200 113/01/01/0 59  Part-Nr. Designation 022 013 Washer 023 989 Lock tab 025 982 Washer 041 298 Lock tab 060 860 Lock tab 063 835 Screening cap 064 273 Lock tab 064 968 Main contact holder — bearing support 064 969 Contact housing 064 971 Bearing shaft 064 974 Current strip 066 032 Retaining clip 066 137 Pressure plate 068 437 Lock tab 069 074 Tubular spacer 069 075 Supporting ring 086 960 Arc chute 087 4 9 0 Complete transition contact, left 087 491 Complete transition contact, right 087 529 Complete switching contact 089 391 Complete main contact, right 089 392 Complete main contact, left 095 804 Screening ring, at the bottom 096 044 Screening ring, at the top 200 284 Spring top 200 401 Bearing sleeve 200 403 Contact stop 200 404 Bushing 400 040 Lock nut M3 400 372 Washer 400 644 Slotted socket screw M6 x 12, self-locking (Tuflok) 401 023 Hex. head screw M6 x 35, self-locking (Tuflok) 401 809 Hex. head screw M6 x 30, self-locking (Tuflok) 450 062 Hex. head screw M6 x 28 450 330 Hex. head screw M5 x 8 450 337 Hex. head screw M5 x 25 450 351 Hex. head screw M6 x 10 450 352 Hex. head screw M6 x 12 450 358 Hex. head screw M6 x 20 450 389 Hex. head screw M8 x 30 450 777 Cylindrical head screw M3 x 16 451 239 Hex. nut M8 451 427 Lock tab 452 206 Circlip lock ring 452 357 Dished washer 453 977 Lock nut M6 453 978 Lock nut M8 453 981 Lock nut M5 500 147 Pressure spring 550 105 Pressure spring 581 869 Cable socket with pin N S CIINLFABRIK On-load tap chnager type V M Parts of the switching element V 500 Part designation for 897 168:1E 60 113/01/01/0  NT 450351 064273 835 | 400044 960 437 401809 200401 400372 450352 rie * 088437 _ @ J © ! 401809 450352 ° —_— >. 400.040. > © oo, LL HS © 451239 064969 087529 m 1208. A 087490: Se 337 ] 066032 ] 400373. a 453977 200284 | 550105 hd 1 o “oete Sd >>| 087491 onset 978 968: &. : 401809 \ 088075 © - 451427 | 452208 025962 022013 — I 1 084971 —084971 KHW 887-1 + 888-1 MASCHINENFABRIK M REINHAUSEN On-load tap changer type V Parts of the switching element V 500 897 168:1E 113/01/01/0 61  Part-Nr. Designation 050 415 Contact screening 051 331 Washer 060 191 Hex. nut M22 x 1.5 060 891 Screening 061 500 Contact screening 062 511 Washer 064 961 Selector switch terminal 064 966 Current collecting ring 066 441 Current collecting ring holder 066 544 Connecting lead 066 565 Contact screening 067 120 Tension bolt 068 257 Stationary change-over selector contact (+,-) 069 289 Current collecting ring connection 071 663 Change-over selector contact bridge (0) 074 226 Screening electrode 087 613 Selector switch contact 200 387 Contact shell 200 423 Half shell for main contact 200 425 Spacer 400 288 Dished washer 400 437 O-ring 400 760 Cylindrical notched pin 401 351 Hex. nut M20 x 1.5 451 792 Dished washer 453 230 Notched pin 453 978 Lock nut M8 860 099 O-ring M C H NENFABRIK On-load tap changer type V Part designation for Parts of contact cylinder V 500 897 169:1E EE SE 62 113/01/01/0  p VE ST ERN aST KIRN SOUL. Et Fa ki | © If 2 ag —d—/ 069289 3 400598 G y ar g 453978 — ) ERT KHW 480-1 + 893-1 A S CHINENFABRIK On-load tap changer type V M REINHAUSE 897 169:1E Parts of contact cylinder V 500 113/01/01/0 63 10.6 Adjustment plans In the adjustment position all marks at the on-load tap changer as well as the contact positions of selector switch and change-over selector correspond to the associated adjustment plan. Here below you will find some standard adjustment plans. In case you need specific adjustment plans please indicate the serial number of the tap changer. Tap changer Adjustment plan V I l 200 Y/D-W/G 897 805 V lil 350 Y/D-W/G V I l 500 Y-W/G V Ill 500 D—40-W/G V l l 500 D-76-W/G Delivery prior to 06/89 and from 06/95 onwards V Ill 500 D-76-W/G 896 527 for delivery period 07/89-05/95 V l l 200 Y/D-0, V 1200-0 893 863 V I I 350 Y/D-0, V |350/700-0 V I l 500 Y/D-0 V 1 200-W/G 893 975 V | 350/700-W/G 64 } 11301010  Tap changer head Switching gear Adjustment position {marked in red v) Change-over selector Installation position Switching segment MASCHINENFABRIK M Tap changer V Ili 200/35